【单选题】Symmetrical three-phase Y-shape connected load, with impedance of (3+j4)Ω per phase, connected to a symmetrical three-phase power supply. We have known the line voltage as follows. Try to find the ef...
【简答题】A computer consists of a processor and an I/O device D connected to main memory via a shared bus with a data bus width of one word. The processor can execute a maximum of 106 instructions per second. ...